Figure 3

(A) An example of a left atrial appendage that has been excised is shown; however, a stump of the appendage (>1 cm) remains attached to the atrium and is referred to as remnant left atrial appendage. (B) The left atrial appendage has been excluded from the atrium by suturing. However, the position of the sutures leaves a remnant left atrial appendage (>1 cm), which remains in communication with the left atrium.